don't use default style as parent for OOXML cond format style, tdf#91335

Change-Id: I1388bb5ab71f6f6d174872023f085240f3bff916

2 files changed, 10 insertions, 2 deletions

diff --git a/sc/source/core/data/stlsheet.cxx b/sc/source/core/data/stlsheet.cxx
index 5d278ff1b8f4..be060c284ad6 100644
--- a/sc/source/core/data/stlsheet.cxx
+++ b/sc/source/core/data/stlsheet.cxx
@@ -121,6 +121,11 @@ bool ScStyleSheet::SetParent( const OUString& rParentName )
     return bResult;
 }
 
+void ScStyleSheet::ResetParent()
+{
+    GetItemSet().SetParent(NULL);
+}
+
 SfxItemSet& ScStyleSheet::GetItemSet()
 {
     if ( !pSet )
diff --git a/sc/source/filter/oox/stylesbuffer.cxx b/sc/source/filter/oox/stylesbuffer.cxx
index 5e73b6856359..598ea497e311 100644
--- a/sc/source/filter/oox/stylesbuffer.cxx
+++ b/sc/source/filter/oox/stylesbuffer.cxx
@@ -3117,9 +3117,12 @@ OUString StylesBuffer::createDxfStyle( sal_Int32 nDxfId ) const
 
         // Create a cell style. This may overwrite an existing style if
         // one with the same name exists.
+        ScStyleSheet& rStyleSheet = ScfTools::MakeCellStyleSheet(
+                *getScDocument().GetStyleSheetPool(), rStyleName, true);
+
+        rStyleSheet.ResetParent();
         SfxItemSet& rStyleItemSet =
-            ScfTools::MakeCellStyleSheet(
-                *getScDocument().GetStyleSheetPool(), rStyleName, true).GetItemSet();
+            rStyleSheet.GetItemSet();
 
         pDxf->fillToItemSet(rStyleItemSet);
     }